Influence of the Stabilization Process on the Piezotronic Performance of Electrospun Silk Fibroin

Sencadas, Vítor

doi:10.1002/mame.202000165

Cited by 10 publications

(8 citation statements)

References 39 publications

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“…The piezoelectric energy harvester made of the repolarized silk fibers showed a maximum output power of 59.5 pW when the load resistance was 8.2 MΩ. More works on silk fiber-based piezoelectric energy harvesters have also been reported 151,152 , and the reported maximum load output power density has reached 45.6 mW/m 2 56 , which demonstrates the great potential of SF for biocompatible piezoelectric energy harvesting.…”

Section: Silk Fibroin Serving As Functional Componentsmentioning

confidence: 90%

Recent progress in silk fibroin-based flexible electronics

et al. 2021

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With the rapid development of the Internet of Things (IoT) and the emergence of 5G, traditional silicon-based electronics no longer fully meet market demands such as nonplanar application scenarios due to mechanical mismatch. This provides unprecedented opportunities for flexible electronics that bypass the physical rigidity through the introduction of flexible materials. In recent decades, biological materials with outstanding biocompatibility and biodegradability, which are considered some of the most promising candidates for next-generation flexible electronics, have received increasing attention, e.g., silk fibroin, cellulose, pectin, chitosan, and melanin. Among them, silk fibroin presents greater superiorities in biocompatibility and biodegradability, and moreover, it also possesses a variety of attractive properties, such as adjustable water solubility, remarkable optical transmittance, high mechanical robustness, light weight, and ease of processing, which are partially or even completely lacking in other biological materials. Therefore, silk fibroin has been widely used as fundamental components for the construction of biocompatible flexible electronics, particularly for wearable and implantable devices. Furthermore, in recent years, more attention has been paid to the investigation of the functional characteristics of silk fibroin, such as the dielectric properties, piezoelectric properties, strong ability to lose electrons, and sensitivity to environmental variables. Here, this paper not only reviews the preparation technologies for various forms of silk fibroin and the recent progress in the use of silk fibroin as a fundamental material but also focuses on the recent advanced works in which silk fibroin serves as functional components. Additionally, the challenges and future development of silk fibroin-based flexible electronics are summarized.

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Section: Silk Fibroin Serving As Functional Componentsmentioning

confidence: 90%

Recent progress in silk fibroin-based flexible electronics

et al. 2021

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“…However, the piezoelectric coefficient of the treated film decreased from 38 pm V −1 to 28 pm V −1 , which was ascribed to the destroying of oriented structure of the electrospun SF film by methanol treatment to a certain extent. Afterwards, Sencadas [95] used methanol solvent immersion to replace the methanol atmosphere treatment, and found that the content of β-sheet folding was increased from 5% to about 30% after soaking. Likewise, they found that the piezoelectric performance (maximum open circuit voltage (V oc ) of 4.5 V at 20.6 kPa, sensitivity of 0.078 V kPa −1 ) was also decreased by 50% if compared with the untreated sample.…”

Section: Electrospinningmentioning

confidence: 99%

“…Besides, organic solvents such as hexafluoroisopropanol (HFIP) [95][96][97], hydrated hexafluoroacetone (HFA-3H 2 O) [98,99] and trifluoroacetic acid [100] can also be used to dissolve SF for obtaining stable and transparent SF solutions, yet they also face problems like insufficient solubility, high cost, and toxicity of the solvents [101]. In addition, ionic liquids (ILs), such as 1-butyl-3-methylimidazole chloride (BmimCl) and 1-ethyl-3-methylimidazole chloride (EmimCl) [102], are also used to dissolve SF owing to their excellent thermal stability and easy regeneration [103].…”

Section: Dissolving Of Sfmentioning

confidence: 99%

“…In general, there are two solutions to alleviate the impact of this side effect. For one thing, it is likely to offer RSF a post processing like methanol soaking or annealing [81,95] to induce more β-sheet folding. For another, it is able to prepare silk nanofibers (SNFs) with a natural silk fiber structure to a certain extent by 'bottom-up' and 'top-down' strategies [107,108].…”

Section: Dissolving Of Sfmentioning

confidence: 99%

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Silk fibroin-based flexible pressure sensors: processing and application

Chen,

Liu,

et al. 2024

Mater. Futures

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With the advent of the Internet of Things and Artificial Intelligence, flexible and portable pressure sensors have shown great application potential in human-computer interaction, personalized medicine and other fields. By comparison with traditional inorganic materials, flexible polymeric materials conformable to the human body are more suitable for the fabrication of wearable pressure sensors. Given the consumption of a huge amount of flexible wearable electrons in near future, it is necessary to turn their attention to degradable polymers for the fabrication of flexible pressure sensors for the development requirement of green and sustainable electronics. In this paper, the structure and properties of silk fibroin are introduced, and the source and research progress of the piezoelectric properties of silk fibroin are systematically discussed. In addition, this paper summarizes the advance in the studies on silk fibroin-based capacitive, resistive, triboelectric, and piezoelectric sensors reported in recent years, and focuses on their fabrications and applications. Finally, this paper also puts forward the future development trend of the high-efficiency fabrication and application of silk fibroin-based piezoelectric sensors. It offers new insights to the design and fabrication of green and biodegradable bioelectronics for in vitro and in vivo sensing applications.

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“…[191] Moreover, protein-based biomaterials such keratin, silk, and collagen were studied. Sencadas [192] investigated the piezoelectric performance of electrospun silk fibroin. Spider silk as natural polymer has been used recently for bio-PNG applications.…”

Section: Other Natural Piezoelectric Materialsmentioning

confidence: 99%

A Comprehensive Review on Piezoelectric Polymeric and Ceramic Nanogenerators

2022

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With the increasing concerns over global warming and the growing demands for electricity, many researchers have considered renewable and sustainable resources for electricity/power generation. [1] Photovoltaics, thermoelectric, and electromagnetic induction are among the well-established technologies for electricity generation. [2] Mechanical energy is one of the most abundant and available resources that can be harvested to generate electricity. For example, mechanical energy is available in the form of human body motion and mechanical vibration. [3][4][5][6] Piezoelectric and triboelectric nanogenerators have both been used for mechanical energy harvesting. In triboelectric nanogenerators, electrical energy originates mainly from friction or temporary contact of two different layers. However, a wide range of deformation modes like bending, stretching, and vibration can generate electricity using piezoelectric nanogenerators (PNGs). The working mechanisms of PNGs are typically easier than triboelectric nanogenerators. [7] In addition, improving electrical output and reproducibility of triboelectric nanogenerators are still challenges. [8] The use of ferroelectric materials is a promising choice for energy harvesting. Ferroelectric materials show both piezoelectric (generation of electrical power from mechanical oscillation) and pyroelectric (generation of electricity from temperature fluctuation) properties. [9,10] Piezoelectric property offers conversion of mechanical energy to electricity. By applying mechanical stress, dipole momentum forms, leading to spontaneous polarization. Consequently, the electric current flows through the piezoelectric materials as a result of charge accumulation. [11] A wide range of piezoelectric materials is used as PNGs. Piezoelectric materials can be categorized into ceramics, polymers, and piezoelectret polymers. Materials with perovskite or wurtzite nanostructures show piezoelectric properties because their crystals are noncentral symmetry. Ceramics with perovskite

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Influence of the Stabilization Process on the Piezotronic Performance of Electrospun Silk Fibroin

Cited by 10 publications

References 39 publications

Recent progress in silk fibroin-based flexible electronics

Recent progress in silk fibroin-based flexible electronics

Silk fibroin-based flexible pressure sensors: processing and application

A Comprehensive Review on Piezoelectric Polymeric and Ceramic Nanogenerators

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